CN104595880B - Steam, hot water two purpose boiler and system - Google Patents

Abstract

A steam and hot water dual-purpose boiler and system, mainly composed of a fuel (gas/electricity) steam/hot water dual-purpose boiler, a steam system and a hot water system, and has three types of steam/hot water/steam hot water dual-purpose Mode selection and intelligent control. The positive effects of the present invention are: one machine with two functions, which solves the steam and hot water user adjustment needs of the non-continuous heating places where hot water heat is used as safety guidance and continuous and continuous heat supply in ships and other fields, and steam safety hazards are used to determine the timing. A global creation and invention of thermal and thermal systems technology.

Description

Steam and hot water dual-purpose boilers and systems

technical field

The present invention relates to the technical field of boiler thermal systems, in particular to various energy (fuel) boiler product technologies, steam boilers and their application technologies, hot water boilers and their application technologies, and integration of thermal pipelines in marine and land industries and military and civilian fields. and electrical control integration technology.

Background technique

The existing shipbuilding industry military/civilian fields and land industry and construction fields have a certain proportion of steam demand due to heat users. For example, using a steam boiler needs to convert a certain proportion of hot water users; if choosing a hot water boiler cannot solve the problem of steam Users; if one steam/hot water is selected, the investment and construction of equipment and boiler room will be increased; in addition, due to the safety orientation of boiler operation management, it is desired to minimize the use of heat exchange and safety management for seasonal steam users; In order to reduce the volume and load of condensate recovery hot well unit and the actual needs of customers, etc., it is generally summarized as reducing the large investment in steam/water exchange in the entire steam system, strengthening safety requirements, reducing metal weight and volume, and ensuring simple heating and HVAC systems change. Such oriented traditional products inevitably have micro-pressure steam/water dual-purpose boilers on the market, but their product structure, installation and operation system, integrated control automation, independent and simultaneous operation modes are not yet mature, and are limited to manual control. There are certain hidden dangers in installation and use, and there is a small number of applications in informal places that lack supervision and irregularities.

Contents of the invention

The technical problem to be solved by the present invention is to provide a fuel (gas/electricity) steam/hot water dual-purpose boiler and system.

In order to solve the above technical problems, the present invention is implemented in the following manner: a dual-purpose steam and hot water boiler and system, including a dual-purpose steam and hot water boiler, steam system users, and hot water system users;

The steam and hot water dual-purpose boiler includes a boiler fresh water source, a boiler automatic drain valve, a control box, a heater, and a hot water mode replenishment switching valve group;

The steam system users include boiler steam outlet cut-off valve, boiler steam system feed water stop check valve, boiler steam system feed water pump group, boiler steam system replenishment valve, hot well unit, steam condensate cooling water source;

The hot water system users include boiler hot water outlet cut-off valve, boiler hot water return cut-off valve, boiler hot water system circulating pump group, boiler hot water system automatic replenishment valve group, hot water system expansion tank, boiler built-in hot water heater;

The steam outlet shut-off valve of the fuel steam and hot water dual-purpose boiler is connected to the steam user to supply steam, the steam system user uses the heated condensed water piping to connect to the hot well unit, the condenser is connected to the cooling water source, and the hot well is connected to the The steam water replenishment valve and the fresh water source, the hot well unit is composed of a condenser and a hot well to realize steam heating and water replenishment, condensed water recovery and temperature-controlled cooling requirements, and the outlet of the hot well is connected to the steam system mode feed water pump group, so The feed water pump is connected to the boiler feed water valve and is controlled by the steam mode to feed water to the boiler, and after heating, the steam is supplied from the outlet of the boiler steam outlet cut-off valve;

The hot water outlet cut-off valve on the left side of the steam and hot water dual-purpose boiler is connected to the hot water user, the return water pipe of the hot water user is connected to the inlet of the hot water circulation pump group, and its outlet is connected to the hot water of the steam and hot water dual-purpose boiler. The return cut-off valve is connected to complete the circulating water supply/return pipeline for hot water users; the hot water user system is equipped with an automatic replenishment valve and an expansion tank to realize automatic water supply and constant pressure for hot water users;

Hot water mode replenishment switch is equipped with manual automatic replenishment electric valve on the return water pipe of the steam and hot water dual-purpose boiler, which is associated with the hot water mode of the control box to automatically switch and change the water level; The automatic drain electric valve is controlled by the steam mode of the steam and hot water dual-purpose boiler control box to automatically adjust the steam water level and close; the boiler automatic drain electric valve can be selected to realize the automatic sewage discharge of the steam and hot water dual-purpose boiler; the steam/hot water dual-purpose boiler The fresh water source or soft water source of the boiler is specially set up with the pipeline system to provide water source pipeline connection indications for steam and hot water heat users respectively.

The positive effect of the present invention is:

a. One machine with two functions, which solves the steam and hot water user adjustment needs of ships and other fields where hot water heat is safety-oriented and continuous heating is based on steam safety hazards and non-continuous heating.

b. One machine can be directly used for two purposes, which is beneficial to reduce the investment in heat source equipment and various steam heat exchange equipment, thereby reducing various investment costs.

c. Due to the integration of the two heat source equipment and the reduction of heat exchange equipment, the metal consumption and the volume of the machine room are actively and effectively reduced to meet the special weight reduction limit requirements of ships, which is conducive to speeding up ship performance and narrow space layout.

d. The world's first product and integration technology, leading and promoting the development of product technology and industrial transformation in the field of boilers and heat exchange, and encouraging enterprises to improve product differentiation competitiveness.

e. It is conducive to the exchange of industry products and integrated technologies, and it is a new highlight case of talents and education and training.

f. Built-in heat exchange, improving thermal efficiency and reducing metal consumption, saving energy and meeting the resource-saving strategy.

Description of drawings

Fig. 1 is a schematic diagram of the present invention.

detailed description

The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

As shown in Figure 1, a fuel (gas/electricity) steam/hot water dual-purpose boiler and system according to the present invention includes a fuel (gas/electricity) steam/hot water dual-purpose boiler 1, a steam system user 2, Hot water system users 3. Fuel (gas/electricity) steam/hot water dual-purpose boiler 1 includes boiler fresh water source 11, automatic drain valve 12, control box 13, (oil/gas/electricity, etc.) heater 14, hot water mode replenishment switching valve group 15.

Steam system user 2 includes boiler steam outlet cut-off valve 21, boiler steam system feed water stop check valve 22, boiler steam system feed water pump group 23, boiler steam system replenishment valve 24, hot well unit 25, and steam condensate cooling water source 26.

Hot water system users 3 include boiler hot water outlet shut-off valve 31, boiler hot water return shut-off valve 32, boiler hot water system circulation pump group 33, boiler hot water system automatic replenishment valve group 34, hot water system expansion tank (including Open water tank) 35, boiler built-in hot water heater 36.

The steam outlet shut-off valve 21 is connected to the steam user 2 to supply steam, the steam user 2 is connected to the hot well unit 25 (virtual frame) with the heated condensed water piping, the condenser is connected to the cooling water source 26, and the hot well is connected to the steam replenishment valve 24 and the fresh water source 11, The hot well unit 25 uses the condenser hot well to realize steam heating and replenishment, condensed water recovery and temperature-controlled cooling requirements. The outlet of the hot well is connected to the steam system mode feed water pump group 23, and the feed water pump 23 is connected to the feed water valve 22, which is controlled by the steam mode to the boiler. Feed water, after heating, is supplied by outlet 21 to produce steam.

The hot water outlet cut-off valve 31 on the left side of the fuel oil (gas/electricity) steam/hot water dual-purpose boiler 1 is connected to the hot water user 3, and the return water pipe of the hot water user 3 is connected to the inlet of the hot water circulation pump group 33, and its outlet is connected to the hot water circulation pump group 33 inlet. Fuel (gas/electricity) steam/hot water dual-purpose boiler 1 hot water return cut-off valve 32 is connected to complete the hot water user circulation supply/return water pipeline; in order to ensure water replenishment and expansion, the hot water user 3 system is equipped with an automatic water replenishment valve 34 and expansion tank 35 realize automatic water supply and constant pressure for hot water user 3.

Water replenishment switch in hot water mode On the return water pipe of fuel (gas/electricity) steam/hot water dual-purpose boiler 1, a manual/automatic water replenishment electric valve is associated with the control box 13 hot water mode to automatically switch and adjust the water level.

Hot water switching steam mode water level control adjustment and specially set up automatic drain electric valve 12 through fuel (gas/electricity) steam/hot water dual-purpose boiler 1 control box 13 steam mode control to automatically adjust the steam water level state and close. According to selection, this valve can be used concurrently to realize the automatic blowdown of fuel (gas/electricity) steam/hot water dual-purpose boiler 1.

Fuel oil (gas/electricity) steam/hot water dual-purpose boiler 1 Steam/hot water dual-purpose pipeline system is specially equipped with fresh water source (or soft water source) 11 Provides water source pipeline connection diagrams for steam and hot water users respectively .

The parameter characteristics of this device:

1. Working pressure: tentatively lower than the standard level of 0.7/1.0/1.25MPa, but advocates higher pressure product development and ownership.

2. Hot water temperature: tentatively set at less than 95°C, but it is recommended to develop and own at a higher temperature corresponding to the working pressure.

3. Heat production: Evaporation is customized according to the actual boiler capacity (variable value) and hot water power is customized according to the actual boiler capacity.

4. Energy and fuel consumption: Calculate and verify the amount based on the maximum combination of actual evaporation and actual hot water power and fuel type.

5. Dimensions/weight: Design vertical/horizontal positioning dimensions and calibrate weight with actual customized product technology.

6. Materials and interfaces: meet the drawing approval customization with actual design and specifications.

7. Quality and certification: The inspection and certification of mobile boilers (for ships) and stationary boilers (for land) and military supervision are based on the actual site to ensure quality and qualification requirements.

The technical principle of this device:

1. Steam mode: that is, the technical characteristics of the steam boiler and system, with multi-level water level automatic water supply, pressure control heating, steam production and even condensed water recovery cycle process system. This mode is based on the steam boiler product and system requirements of a certain energy or fuel to realize product customization research and development, and follow the safety and supervision and inspection product and system mode of steam safety regulations in various fields. This mode is pressure-controlled heating and is controlled by the "control mode" switch of the present invention to automatically or manually cut off the "hot and cold medium" interface to ensure that the "hot water mode" is independently selected and used without interfering with each other.

2. Hot water mode: that is, the indirect heating mode of the hot water boiler. This mode realizes the steam heat medium isolation technology by steam water/water exchange, and realizes the heating control mode by the temperature of the steam heat medium water medium. The water temperature of the hot water system is also monitored and protected. The water level control of "hot water mode" is completed by the special patented control cabinet "hot water mode", and the water replenishment is completed by the automatic constant pressure water replenishment valve of the hot water system and the automatic water replenishment valve group of the boiler in this mode to ensure that this mode is consistent with the steam The feed water of the mode is independent, and its expansion safety device is guaranteed by the system expansion tank (or open expansion tank), and because of the "steam" or "steam/hot water dual-purpose" mode switching control selection, the boiler discharge port is specially designed for manual or Automatic valve realizes "hot water mode" and automatic adjustment of water level in steam and dual-use modes.

This "hot water mode" is equivalent to a hot water boiler and the system is independently heated, and the water pump circulates to ensure use and safety. Such hot water boiler products and systems are not limited to pressure and normal pressure. General HVAC technicians can customize products, systems and controls, very simple!

3. Steam/hot water mode:

That is, a combined product and system of a steam boiler and a hot water boiler directly heats the steam user and hot water user mode. In this mode, the heating control is controlled by the boiler pressure to ensure the steam quality, and the hot water system is realized by indirect heating of steam water/water, because this "dual-purpose mode" is controlled by the special control system of the present invention. It realizes the automatic water level replenishment of the steam system, heating, steam production and indirect heating cycle heat supply of the hot water system, as well as the operation monitoring and various safety protections of the two heat utilization systems.

The device has the following three modes:

a steam mode, b hot water mode, c steam/hot water dual-purpose simultaneous mode.

The three modes of a/b/c are realized separately by the control system of specific patent design, and the system water replenishment/pressure test/power distribution can be carried out according to various specifications and standards of conventional steam boilers and hot water boilers, without special requirements.

a. Steam mode:

The hot water system is not in use but filled with water to close the inlet/outlet 31/32 valve. Select the "steam mode" of the control cabinet 13 and replenish the water through the boiler fresh water source 11, and then replenish the water from the hot well unit 25 to the normal liquid level of the hot well unit 25, control the system 13 and the fuel (gas/electricity) steam/hot water dual-purpose boiler 1 Water level control feed water pump group 23 realizes water replenishment of the steam system; start the heating function of the fuel (gas/electricity) steam/hot water dual-purpose boiler 1 control cabinet 13, then the fuel (gas/electricity) steam/hot water dual-purpose boiler 1 The set value of the pressure inside the pot shell automatically starts the heater 14, so as to realize the temperature and pressure rise. When the working pressure is raised, the steam outlet valve 21 can be opened to supply steam to the steam user 2, and the condensed water of the user steam returns to the hot well unit 25 for condensation The device is cooled by the cooling water source 26 (a certain hot well can be set by the control cabinet 13 Temperature control, generally ships use 60°C as the water supply temperature to repeatedly supply water to fuel (gas/electricity) steam/hot water dual-purpose boiler 1).

If the "steam mode" is stopped, select the steam mode of the control cabinet 13 to stop the heating of the boiler heater 14 or cut off the steam supply through the valve 21, then the steam heating will stop, and the selection is flexible accordingly.

This steam mode is equivalent to conventional steam boiler operation without any special piping requirements.

When the steam mode is selected, the hot water circulation pump unit 34 and the hot water switching valve 15 are forced to interlock to stop/close, that is, a steam boiler is completely running -----

b. Hot water mode:

Firstly, the steam outlet/water supply valve 21/22 can be closed manually or automatically (with an electric valve), and the water replenishment valve group 15 can be opened, and the boiler "hot water mode" can be selected by the control box 13, then the fuel (gas/electricity) steam/hot water can be dual-purpose Boiler 1 becomes a hot water boiler heating operation. The boiler water temperature-related heater 14 starts and stops and monitors the boiler water primary/secondary two hot water temperatures.

Check and set the pressure of the automatic water supply valve 34 of the hot water system to meet the water supply pressure requirements of the user, open the boiler hot water outlet/return valve 31/32 and the water supply valve group 15 in the hot water mode, and start the heating operation in the hot water mode through the control cabinet 13, then The circulating pump group 34 automatically circulates and the heater 14 automatically controls the temperature of each hot water user (this user's heat consumption can be simple, or it can be a larger system and specific heat exchange, and no matter the open/closed system, but all Follow the principle of conventional HVAC thermal system design). If you want to stop the operation of the hot water system, then stop the water pump 34, and if you do not use it for a long time, then select the hot water mode to stop (this kind of belt with a built-in heater mainly relies on water/water heat exchange, but according to different capacity parameter structures and volume products, this This kind of heat exchange can choose steam (water)/water heat exchange without seeking finalization and tailor-made. Our invention does not exclude the use of boilers for direct water intake space heat exchange without the built-in heat exchanger 36. Of course, the premise is that the water quality and Mode control is reliable. We will also design two mode control systems of hot water indirect heating and hot water direct heating to meet certain boiler structure and power requirements.)

For this hot water mode, its installation and inspection can meet the conventional HVAC system specifications.

The key innovation of this hot water mode is to select the control mode to automatically realize the full water level of the boiler hot water and switch the steam boiler to the hot water boiler mode. This principle will inevitably increase the water level adjustment valve group 12 etc. of some inlet and outlet pipe mouth manual automatic valves 15 and mode conversion, and has only done simple illustration for easy to understand.

c. Steam/hot water dual-use mode:

Check the two function inlet/outlet valves 21/22 and 31/32 are normally open and the valve group 15 is closed, but select the control cabinet 13 "steam/hot water dual-purpose mode" to use fuel (gas/electricity) steam/hot water dual-purpose The boiler water level/feed water/steam production/heating are all the same as the steam mode, while the hot water system is only equipped with a circulating water pump 34 in the control cabinet 13 for manual/automatic operation, that is, the principle of the steam user pipeline is the same as that of the a mode.

Please refer to a to compare c.

In the dual-function mode, the valve group 15 is automatically and forcibly closed by the control cabinet 13 .

In this mode, the heater is operated under the control of the pressure controller and displays the temperature of the hot water system and boiler water temperature.

The main parameters, shape features, materials and control and other fuel features of the present invention require limited rights protection for simple transformations and changes identified by certain professionals through this patent.

Positive effect of the present invention:

A. Existing shipbuilding industry (mobile) steam and hot water boilers/land use (stationary) steam and hot water boilers (both energy and fuel are not counted) have a large demand for heat. The users are steam and hot water, and one needs to be solved. The boiler directly satisfies the heat consumption of the two proportioning medium temperatures (of course, steam can produce hot water indirectly through exchange). This device can solve the problem of direct connection between steam/hot water and the heat medium of two kinds of steam and hot water at the terminal.

B. Solve the technical problem that a single steam boiler (excluding energy and fuel technology) needs to invest in various heat exchange equipment.

C. Solve the confusion that a single hot water boiler cannot meet the heating temperature and time requirements of some steam users.

D. Solve the economical problem of excessive investment in one steam/one hot water boiler equipment.

E. Satisfy the safety management orientation based on hot water heating. (such as various seasonal/temporal oil tank heating of military ships, kitchen disinfection and land safety requirements, high-rise halls, halls and industrial fields, etc., such as non-continuous timing and quantitative steam demand, etc., and long-term continuous use of heat and hot water) .

F. Solve the technical breakthrough of various special heat exchangers built into the steam boiler, realize the separation of the medium used for steam and the medium used for hot water, and make the system safe and independent control.

G. Solve the automatic control system and function mode automatic switching of steam boiler water supply/steam production, system automation, independence and hot water boiler water supply/expansion system automation, independence and steam/hot water dual-use mode, ensuring single steam /Single hot water/dual-use three modes, one machine with three safe and reliable operations, process pipeline flow system and a world-first boiler product pattern, making this product really called a steam boiler and a hot water boiler Boiler and three combinations of two types each. To put it more simply, as long as you connect to the steam system and choose to control the steam mode, you can independently satisfy the safe use of steam users; as long as you connect to the hot water system and choose to control the hot water mode, you can independently satisfy the safe use of hot water users; and as long as you choose steam/hot water mode can realize the safe and independent use of steam/hot water.

H. This device is not limited to the product structure, interface, and control technology itself. It further broadens the technical support of the two heat medium systems of the product. It is a device that expands the concept of boiler products and integrated system products.

Claims (4)

1. a kind of steam, hot water two purpose boiler and system, it is characterised in that use including steam, hot water two purpose boiler, vapour system Family, hot-water heating system user；

The steam, hot water two purpose boiler include boiler freshwater source, boiler auto Drain, control chamber, heater, hot-water mode Replenishment switching valve group；

The vapour system user includes that Boiler Steam outlet shutoff valve, electrical system feedwater screw down nonreturn valve, boiler steam Vapour system feedwater pump group, electrical system water compensating valve, hot well unit, steam condensate (SC) cooling water source；

The hot-water heating system user includes that answer back stop valve, boiler hot-water system of boiler hot-water outlet shutoff valve, boiler hot-water is followed Ring pump group, boiler hot-water system automatic water supplement valve group, hot-water heating system swelling water tank, the built-in hot-water heater of boiler；

The steam, hot water two purpose Boiler Steam outlet shutoff valve connect the steam user and supply steam, the vapour system Condensed water piping connection hot well unit after user's heat, condenser connect the cooling water source, and hot well connects the steam moisturizing By condenser, hot well, valve and the freshwater source, the hot well unit realize that steam heating moisturizing and condensing hot air furnace and temperature control are cold But require, hot well outlet is connected with vapour system pattern feedwater pump group, and the feed pump is connected with the boiler feed valve Controlled to boiler feedwater from steam mode, by Boiler Steam outlet shutoff valve outlet producing steam supply after heating；

On the left of the steam, hot water two purpose boiler, hot water outlet stop valve is connected with hot water user, hot water user water return pipeline with Hot water circuit pump group entrance connects, its export with steam, hot water two purpose boiler hot-water answer back stop valve be connected and complete hot water use Circulate confession/water return pipeline in family；Hot water custom system is configured with automatic water compensating valve and expansion drum realize hot water user self water feeding and Level pressure；

Hot-water mode's moisturizing to be switched in and be configured with manual automatic water supplement electrodynamic valve and control on steam, hot water two purpose boiler blow-down water pipeline Case hot-water mode processed associates and automatically switches and change adjustment water level；Hot water switching steam mode water lev el control adjustment, specially sets Automatic excretion electrodynamic valve is put, this drains electrodynamic valve automatically by steam, the steam mode control of hot water two purpose boiler control box And adjust automatically steam water level state and close；Boiler drain automatically electrodynamic valve select can dual-purpose realize steam, hot water two purpose pot Stove automatic pollution discharge；The dual-purpose pipe-line system of steam/heat water is specially provided with boiler freshwater source or soft water source respectively to steam and hot water Two kinds provide water pipeline connection signal with heat user.

2. a kind of steam according to claim 1, hot water two purpose boiler and system, it is characterised in that when this device is adopted During steam mode：

Switch board " steam mode " is selected just to be supplemented to hot well unit by hot well unit water compensating valve after boiler freshwater source moisturizing Normal liquid level, control system and water lev el control feedwater pump group realize vapour system moisturizing；Start switch board heating function, then steam, Hot water two purpose boiler is according to pressure set points automatic heater in body shell, and realizes that temperature and pressure rises, and rises to work When making pressure, steam (vapor) outlet valve can be opened and steam is supplied to steam user, user's steam condensate (SC) returns to the condensation of hot well unit Device, is cooled down by cooling water source；

As stopped " steam mode ", switch board steam mode is selected to stop the heating of boiler heater or cut off steam by valve supplying Should, then steam heating stops, and selects according to this and flexibly；

When selecting steam mode, hot water circuit pump group and hot water switching valve are forced to interlock phase down, that is, be entirely a steaming Boiler furnace is in operation.

3. a kind of steam according to claim 1, hot water two purpose boiler and system, it is characterised in that when this device is adopted Hot-water mode：

First can manual or automatic steam off export feed-water valve, open moisturizing valve group and boiler " hot water mould selected by control chamber Formula ", then steam, hot water two purpose boiler become hot-water boiler heating operation；Heater start and stop are associated by stove coolant-temperature gage and monitors stove Water once, secondary two kinds of hot water water temperatures；

Check that setting hot-water heating system automatic water compensating valve pressure meets user's supplementing water pressure requirement, opens boiler hot-water and exports/answer back Valve and hot-water mode's moisturizing valve group, start hot-water mode's heating operation by switch board, then circulate pump group Automatic Cycle and add The each hot water user of hot device automatic temperature-adjusting control；If stopping hot-water heating system operation, stop water pump, such as do not use for a long time, then Hot-water mode is selected to stop.

4. a kind of steam according to claim 1, hot water two purpose boiler and system, it is characterised in that steam/heat water two Use pattern：

Check that two kinds of function import/export valves are normally opened and valve group is closed, but select switch board " the dual-purpose pattern of steam/heat water " then to steam Vapour systematic water level/feed water/steam/heat is identical with steam mode, and hot-water heating system has simply installed recirculated water additional in switch board The handss of pump/automatically select and put into operation, i.e. steam user pipeline principle is as steam mode；The controlled cabinet of valve group under difunctional pattern Automatic forced is closed.